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(No Model.)

0. F. WOOD.

OIL BURNER.

No. 429,588. Patented JuneB, 1890.

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WITNESSES,

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* UNITEI) STATES PATENT OFFrcE,

CHARLES FRANCIS WVOOD, OF NEXV YORK, N. Y., ASSIGNOR TO TIIOMAS M. FELL, .OF TENAFLY, NEW JERSEY, AND WILLIAM T. A. HART, OF NEW YORK, N. Y.

OIL-BURNER.

SPECIFICATION forming part of Letters Patent No. 429,588, dated June 3, 1890.-

Application filed March 6, 1889. Serial No. 302,155. (No model.)

To all whom it may concern:

Be it known that I, CHARLES FRANCIS WOOD, a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Oil-Lamps, of which the following is a specification.

My invention relates to improvements in [O Argand-burner lamps; and the object of my improvements is to provide a better means of supplying and regulating the air-currents to the flame, so as to obtain a more perfect combustion of the illuminating-gases. These objects are accomplished by, and my invention consists in, certain novel features of construction and in combination'of parts, more fully described hereinafter, and particularly pointed out in the claim.

Referring to the accompanying drawings,

Figure 1 is a vertical section showing a twolight lamp embodying all my said improvements; and Figs. 2 and 3, the application of the regulating disk and rod and the hollow truncated cone to single burners, being respectively a table and a side lamp.

Similarlettersrefer to similar parts throughout the'several views.

A and A represent the cylindrical wick 0 and central air-tubes, consisting of an outer and an inner tube, said inner tube A being open at the bottom and top; B,an enlarged boss screwed or fastened thereto, and in which is placed one or more perforated disks of metal and used as air-strainers.

C is the central regulating-rod, having a metal disk D at its top and a button on the lower end, as shown. This rod is supported in position by a horizontal cross-bearing E 40 in the boss 13 and a vertical metal tube or guide F, said tube being fastened to crossbearing E. The rod 0 is made with a long screw thereon on its lower end, which fits into and moves in a corresponding screw on the bearing E.

G is the hollow truncated cone surrounding the upper end of the wick-tube and resting 011 a perforated disk at its base, the top diameter of this cone being made a trifle less in diameter than the disk D.

H is the chimney; I, a shade held by a metal ring 1'; J, an oil-fount, of the type generally used for an automatic oil-supply, consisting of the usual air-tight can with its lower valve and an outer case, as shown; K, an oil- 5 5 tube leading to the wick-tube.

L L are hollow metal tubes, the upper part provided with flanges and screw-holes, so as to be'readily attached-to a ceiling or other support. M and N are hot-air tubes connect- 6o ing with tubes L, the former serving to support the shade I by the usual metal-ring attachment and to conduct the heated air from said shade into tube L, and the latter supporting the burner, cone, and chimney and leading and supplying air into chamber 0.

O is a hot-air chamber around the wicktube, having a closed bottom and connected with the pipe N, its top being formed by the perforated disk-supporting cone G. As an additional su'pport'to this hanging lamp the outer -case of the oil-fount is made fast by screws or brazing to the pipes L Lbya band of 'metal P, and the burner or burners by the two or more stays or brackets Q.

It represents the usual wick-raiser.

In the drawings I have shown only a twolight lamp or chandelier; but the central fount may be made to supply two or more additional burners of similar construction placed '80 between them.

The operation of the lamp is as follows: The oil flows from the fount to the wick-tube by the tube K to a height corresponding with the height of oil held in the outer case of said fount. On turning up and lighting the wick a current of air passes up through the airstrainer of boss B and through the inner airtube A, which thus forms the center airsupply. The outer air-current passes to the burner by first entering the tube M, and is drawn down the tubes L and N into the chamber 0 and thence to the burner by the perforated disk, as shown, and the hollow truncated cone G. The air passing to the 5 burner by M is highly heated by having been through the narrow space formed between the chimney and the shade, as shown by the arrows, and by taking this air at a point a little below the top of the chimney, as shown, it is comparatively free of thevitiated gases of combustion, which are delivered and pass oil": at a higher point. The outer or hotair current going through the contracting cone G is directed immediately toward the center of the under side of the disk D, while the center air-current by A is forced immediately against it and in opposite direction, and, being in the more direct line of d aft, is the stronger and controlling current.

By experiment I have found that air passing up the central air-tube of round burners, said tube being hot, does so in a vertical manner, and any uneven surface or metal projection placed in the line of this vortex is an obstruction, and produces an uneven flame.

In my lamp the central regulating-rod O is supported solely by the screw-bearing E, placed at the bottom, and a small upright tube or guide having no upper cross-vane. I have further determined that the air-supply for apropercombustion of an oil and of various kinds of oils requires a means of adjustment both as to quantity and force. The disk D, being attached to the central regulating-rod G, is capable of being moved up or down by the small lower hand-button, which motion is independent of the wick movement. In my lamp, in order to convert a yellow flame into a brilliant white light, it is only necessary to lower the disk D to a point corresponding to the force of air required and the consumption of the oil-feed to the wick. Should a less amount of light be required, it can be had with equal perfect combustion by first turning down the wick and then lowering the disk to the proper height. The eitec t produced by the cone and regulating-disk, when using ordinary kerosene-oil, is a horizontal flame and without odor. The regulating-disk and its rod and the hollow truncated cone can be applied to various and other 40 styles of lamps, Fig. 3 showing the application to an ordinary side or wall lamp, and Fig. 2 when attached to an ordinary tablelamp in which the disk and rod are then moved up or down by a supplemental side connecting-wheel having a rod and pin T on the outside of such lamp.

lhe system of hot-air pipes M, L, and N and chamber 0 enables the lamp to burn sperm or other heavy oils to great advantage.

Having fully. described my said invention, what I claim is- In a lamp, the combination of the two concentric tubes having a space between them for the wick, and forminga central air-supply, an enlargement beneath said tubes, a perforated cross-bar in said enlargement, an imperforate guide-tube extending through said air-supply and secured at its lower end only to said cross-bar, a rod extending through said tube and provided beneath the cross-bar with means for adjusting the same and on its upper end with a regulating-disk, a perforated plate around the upper portions of said two tubes, and a truncated cone thereon surrounding said tubes and supplying air to the under side of the flame, substantially as described.

Signed at New York, in the county of New York and State of New York, this 23d day of February, A. D. 1889.

GHARLES FRANCIS \VOOD.

Witnesses:

H. Hnnvnnz, Wit. BORNHOFF. 

